Synthesis of carbon core--shell pore structures and their performance as supercapacitors

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Ariyanto T, Dyatkin B, Zhang G, Kern A, Gogotsi Y, Etzold B
Zeitschrift: Microporous and Mesoporous Materials
Jahr der Veröffentlichung: 2015
Band: 218
Seitenbereich: 130-136
ISSN: 1387-1811


Abstract

High-power supercapacitors require excellent electrolyte mobility within the pore network and high
electrical conductivity for maximum capacitance and efficiency. Achieving high power typically requires
sacrificing energy densities, as the latter demands a high specific surface area and narrow porosity that
impedes ion transport. We present a novel solution for this optimization problem: a nanostructured core-shell carbonaceous material that exhibits a microporous carbon core surrounded by a mesoporous,
graphitic shell. Our tunable synthesis parameters yielded a structure that features either a sharp or a
gradual transition between the core and shell sections. Electrochemical supercapacitor testing using
organic electrolyte revealed that these novel core-shell materials outperform carbons with homogeneous
pore structures. The hybrid core-shell materials showed a combination of good capacitance
retention, typical for the carbon present in the shell and high specific capacitance, typical for the core
material. These materials achieved power densities in excess of 40 kW kg-1 at energy densities reaching
27 Wh kg-1.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Teguh, Ariyanto
Professur für Katalytische Materialien
Etzold, Bastian Prof. Dr.
Professur für Katalytische Materialien
Kern, Andreas
Lehrstuhl für Chemische Reaktionstechnik
Zhang, Guirong, Ph.D.
Professur für Katalytische Materialien


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Einrichtungen weiterer Autorinnen und Autoren

Drexel University


Forschungsbereiche

D Catalytic Materials
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Ariyanto, T., Dyatkin, B., Zhang, G., Kern, A., Gogotsi, Y., & Etzold, B. (2015). Synthesis of carbon core--shell pore structures and their performance as supercapacitors. Microporous and Mesoporous Materials, 218, 130-136. https://dx.doi.org/10.1016/j.micromeso.2015.07.007

MLA:
Ariyanto, Teguh, et al. "Synthesis of carbon core--shell pore structures and their performance as supercapacitors." Microporous and Mesoporous Materials 218 (2015): 130-136.

BibTeX: 

Zuletzt aktualisiert 2019-13-03 um 14:08